Advancing UK Aerospace, Defence, Security & Space Solutions Worldwide
  • Home
  • /
  • Defence
  • /
  • Sonardyne International appoints Graham Brown as Managing Director

Defence Security

Sonardyne International appoints Graham Brown as Managing Director

Marine technology provider Sonardyne International Ltd. has announced Graham Brown as its new Managing Director.

Above: Leading marine technology provider Sonardyne International Ltd. has announced Graham Brown as its new Managing Director.
Courtesy Sonardyne International

Graham, who takes over the role from John Ramsden on 1st April, has served on Sonardyne International’s board from 2008, most recently as Sales and Marketing Director and Deputy Managing Director.

Advertisement
Leonardo animated rectangle

John, who has been Sonardyne International’s Managing Director since 2009, is staying within the Sonardyne family, taking the role of CEO of Sonardyne Group, the newly formed parent company of Sonardyne International and its sister companies; Chelsea Technologies, EIVA, Wavefront and 2G Robotics.

“This is an exciting time for Sonardyne International,” says Graham. “Looking beyond the current, uniquely challenging business climate, we’ll continue to grow organically, in terms of our people, our technology offering and the global markets which we support - while upholding the service and support that we’re renowned for. But we’re now part of a wider group of companies, with access to a considerably enlarged portfolio of products and services that complement our own seabed-to-shore systems. We expect this to deliver significant operational benefits for our customers across the global energy, ocean science, civil and defence markets.”

“Next year will be Sonardyne’s 50th year in business and I’m proud to have played a significant role in the success of the company over the last two decades,” says John. “As we look forward to celebrating that half century milestone with Graham at the helm, our collective sights are focussed on the direction we’re headed in at the start of our second half century. As CEO of Sonardyne Group, I’m excited at the prospect of working with Graham and his counterparts across our business to support those who measure, navigate, communicate or explore the world’s waters and oceans, safely, responsibly and more efficiently than ever before.”

Advertisement
ODU RT

Graham is an Electromechanical Engineer by background with a first-class degree and Ph.D. He is also a Chartered Engineer, a Fellow of the Institute of Directors (IoD), a Fellow of the Institute of Marine Engineering Science and Technology (IMarEST), and a member of the Society for Underwater Technology (SUT). He contributes to a number of industry groups such as the Southern Region Council of the Energy Industries Council (EIC).

 

Advertisement
General Atomics LB
Autonomous submarine Excalibur delivered to Royal Navy

Defence

Autonomous submarine Excalibur delivered to Royal Navy

12 December 2025

Excalibur, a 12-metre experimental uncrewed underwater vessel, has now been officially handed over to the Royal Navy.

UK launches new Military Intelligence Services

Defence

UK launches new Military Intelligence Services

12 December 2025

Today, the Ministry of Defence (MoD) launched the new Military Intelligence Services (MIS), designed to ensure UK military intelligence is more efficient and better able to anticipate future threats.

BAE Systems awarded US Navy contract for APKWS laser-guidance kits

Defence

BAE Systems awarded US Navy contract for APKWS laser-guidance kits

11 December 2025

The US Navy has awarded BAE Systems a new five-year, indefinite delivery, indefinite quantity contract for APKWS laser-guidance kits to equip US armed forces with tens of thousands of additional low-cost precision munitions.

JFD Global to enhance Polish Navy

Defence Security

JFD Global to enhance Polish Navy's submarine rescue capability

11 December 2025

James Fisher (JFD Global) has secured a contract with PGZ Stocznia Wojenna, which will see JFD Global integrate a combined, hyperbaric and saturation diving system into the Polish Navy’s new salvage and rescue vessel, Ratownik.

Advertisement
Leonardo animated rectangle
Avon Protection receives European order for FM50 respirators

Defence Security

Avon Protection receives European order for FM50 respirators

11 December 2025

Avon Protection has received a new European order for FM50 respirators and FM61EU filters via the NATO Support and Procurement Agency (NSPA) contract vehicle.

BAE Systems to modernise USS Forrest Sherman

Defence

BAE Systems to modernise USS Forrest Sherman

10 December 2025

BAE Systems has received a $123 million contract from the US Navy to modernise the Arleigh Burke-class guided-missile destroyer USS Forrest Sherman (DDG 98).

Advertisement
ODU RT